/* ==========================================================================
   pages.css — 北京中科测试页面级样式
   引用方式：<link rel="stylesheet" href="public/1228/css/pages.css">
   依赖：common.css（CSS 变量与公共组件）
   ========================================================================== */

/* ==========================================================================
   1. 通用主体容器
   ========================================================================== */
.main-content {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 5rem 2rem;
    overflow: hidden;
}

/* ==========================================================================
   2. 详情页基础
   ========================================================================== */
.page-header {
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 15px;
}

.page-header h1 .number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
    opacity: 0.15;
    line-height: 1;
}

.page-header p {
    font-size: 1.15rem;
    color: var(--gray-color);
    line-height: 1.8;
    max-width: 900px;
}

.intro-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, rgba(26, 75, 140, 0.04) 0%, rgba(142, 202, 230, 0.06) 100%);
    border-radius: var(--border-radius);
    padding: 3rem;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
}

.intro-text p:last-child {
    margin-bottom: 0;
}

.intro-visual {
    background: #ffffff;
    border-radius: var(--border-radius);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0, 0, 0, 0.05);
    min-height: 280px;
}

.intro-visual i {
    font-size: 5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.intro-visual h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-align: center;
}

.intro-visual p {
    color: var(--gray-color);
    font-size: 0.95rem;
    text-align: center;
}

.intro-visual .icon-sub {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.intro-visual .icon-sub span {
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.section-block {
    margin-bottom: 4rem;
}

.section-block h2 {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 0.8rem;
    border-bottom: 3px solid var(--primary-color);
}

.section-block h2 i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.section-block h3 {
    font-size: 1.35rem;
    color: var(--primary-dark);
    margin: 2rem 0 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-block h3 i {
    color: var(--sci-accent-deep);
    font-size: 1.1rem;
}

.table-responsive {
    overflow-x: auto;
    border-radius: var(--border-radius);
    border: 1px solid #eef2f6;
    box-shadow: var(--box-shadow);
    -webkit-overflow-scrolling: touch;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    min-width: 700px;
}

.data-table th {
    background: linear-gradient(135deg, var(--primary-light) 0%, #f8faff 100%);
    color: var(--primary-dark);
    font-weight: 700;
    padding: 1rem 1.2rem;
    text-align: left;
    border-bottom: 2px solid var(--primary-color);
    font-size: 0.95rem;
}

.data-table td {
    padding: 1rem 1.2rem;
    border-bottom: 1px solid #eef2f6;
    color: var(--dark-color);
    line-height: 1.7;
    font-size: 0.95rem;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover td {
    background-color: #f8faff;
}

.data-table .highlight-td {
    font-weight: 600;
    color: var(--primary-color);
}

.data-table .center-td {
    text-align: center;
}

.data-table .sub-label {
    display: inline-block;
    font-size: 0.78rem;
    color: var(--gray-color);
    background: #f0f4f9;
    padding: 1px 8px;
    border-radius: 10px;
    margin-right: 6px;
    vertical-align: middle;
}

.note-block {
    margin-top: 1.5rem;
    padding: 1.5rem 1.8rem;
    background: linear-gradient(135deg, rgba(26, 75, 140, 0.04) 0%, rgba(142, 202, 230, 0.06) 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.note-block p {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--dark-color);
    margin-bottom: 0.8rem;
}

.note-block p:last-child {
    margin-bottom: 0;
}

.note-block strong {
    color: var(--primary-color);
}

.note-block .note-title {
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.note-block ul {
    list-style: none;
    padding-left: 0;
    margin: 0.3rem 0 0.8rem 0;
}

.note-block ul li {
    position: relative;
    padding-left: 1.2rem;
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--dark-color);
}

.note-block ul li::before {
    content: '·';
    position: absolute;
    left: 0.3rem;
    color: var(--primary-color);
    font-weight: 700;
}

.warning-box {
    background-color: #fff3e0;
    border-left: 4px solid var(--warning-color);
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    font-size: 0.95rem;
    line-height: 1.8;
}

.danger-box {
    background-color: #ffebee;
    border-left: 4px solid var(--danger-color);
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    font-size: 0.95rem;
    line-height: 1.8;
}

.success-box {
    background-color: #e8f5e9;
    border-left: 4px solid var(--success-color);
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    font-size: 0.95rem;
    line-height: 1.8;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-color);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 2rem;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--primary-color);
    gap: 12px;
}

/* ==========================================================================
   3. 页头 Hero / 区块标题
   ========================================================================== */
.page-hero {
    background:
        radial-gradient(ellipse 60% 80% at 80% 30%, rgba(142, 202, 230, 0.14) 0%, transparent 70%),
        linear-gradient(135deg, rgba(26, 75, 140, 0.10) 0%, rgba(95, 168, 201, 0.14) 100%);
    padding: 5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.page-hero p {
    font-size: 1.15rem;
    color: var(--gray-color);
    margin-bottom: 0;
    font-weight: 300;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.85;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header h2 {
    font-size: 2.6rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--sci-accent) 100%);
    border-radius: 2px;
}

.section-header p {
    color: var(--gray-color);
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ==========================================================================
   4. 服务卡片网格
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0 3rem;
    margin-bottom: 5rem;
    position: relative;
    padding-top: 0;
}

.services-grid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-color) 0%,
        var(--sci-accent) 25%,
        rgba(26, 75, 140, 0.12) 60%,
        transparent 100%);
    border-radius: 2px;
}

.service-card {
    position: relative;
    background: transparent;
    border: none;
    border-bottom: 1px solid #e8edf3;
    border-radius: 0;
    padding: 1.75rem 0 1.75rem 1.25rem;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    box-shadow: none;
    transition: var(--transition);
    overflow: visible;
    min-height: 0;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 1.75rem;
    left: 0;
    width: 3px;
    height: calc(100% - 3.5rem);
    background: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover::before {
    opacity: 1;
}

.service-visual {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    background: #ffffff;
    border: 1px solid #eef1f5;
}

.service-visual img {
    width: 100%;
    aspect-ratio: 16 / 6;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.service-card:hover .service-visual {
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.14);
    transform: translateY(-2px);
}

.service-body {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    min-width: 0;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1.4;
    margin: 0;
    letter-spacing: 0.2px;
    transition: var(--transition);
}

.service-card:hover .service-title {
    color: var(--primary-color);
}

.service-desc {
    font-size: 1rem;
    color: #5a6673;
    line-height: 1.8;
    margin-top: 0;
    letter-spacing: 0.2px;
    transition: var(--transition);
}

.service-card:hover .service-desc {
    color: #4a5568;
}

.services-simple-list {
    display: none;
}

.services-more-link-wrap {
    text-align: center;
    margin-bottom: 5rem;
}

.services-more-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    padding: 10px 26px;
    border-radius: 30px;
    background: transparent;
    border: 1px solid #d8dfe8;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

.services-more-link:hover {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(26, 75, 140, 0.18);
}

/* ==========================================================================
   5. 分类卡片
   ========================================================================== */
.category-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-top: 2rem;
}

.category-card {
    background: #ffffff;
    border-radius: var(--border-radius);
    padding: 2.5rem 2rem;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--box-shadow-hover);
}

.category-card .card-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.category-card .card-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.category-card h3 {
    font-size: 1.5rem;
    color: var(--primary-dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.category-card p {
    color: var(--gray-color);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.category-card ul {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.category-card ul li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--dark-color);
}

.category-card ul li::before {
    content: '·';
    position: absolute;
    left: 0.3rem;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.category-card .card-cta {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    padding: 12px 28px;
    border-radius: 30px;
    background: var(--primary-light);
    transition: var(--transition);
    align-self: flex-start;
}

.category-card .card-cta:hover {
    background: var(--primary-color);
    color: #ffffff;
    transform: translateX(4px);
    box-shadow: 0 8px 20px rgba(26, 75, 140, 0.18);
}

/* ==========================================================================
   6. 首页 Hero
   ========================================================================== */
.hero-section {
    position: relative;
    width: 100%;
    height: 80vh;
    min-height: 580px;
    max-height: 880px;
    overflow: hidden;
    background: linear-gradient(135deg, #1a4b8c 0%, #0d2c5a 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-bg .swiper-slide {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1a4b8c 0%, #0d2c5a 100%);
}

.hero-bg .swiper-slide picture {
    display: block;
    width: 100%;
    height: 100%;
}

.hero-bg .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transform: scale(1.02);
    transition: transform 8s ease;
    filter: saturate(1.02) contrast(1.02) brightness(0.99);
}

.hero-bg .swiper-slide-active img {
    transform: scale(1.08);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background:
        linear-gradient(95deg,
            rgba(8, 28, 58, 0.68) 0%,
            rgba(8, 28, 58, 0.52) 24%,
            rgba(8, 28, 58, 0.28) 46%,
            rgba(8, 28, 58, 0.08) 68%,
            rgba(8, 28, 58, 0.00) 82%,
            rgba(8, 28, 58, 0.00) 100%),
        linear-gradient(180deg,
            rgba(13, 44, 90, 0.10) 0%,
            rgba(13, 44, 90, 0.04) 40%,
            rgba(13, 44, 90, 0.10) 100%);
    pointer-events: none;
}

.hero-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 14% 52%,
        rgba(6, 22, 48, 0.50) 0%, rgba(6, 22, 48, 0.24) 45%, transparent 74%);
    pointer-events: none;
}

.hero-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top,
        rgba(8, 28, 58, 0.38) 0%, rgba(8, 28, 58, 0.14) 18%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 2rem 2rem 150px;
}

.hero-inner {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.hero-inner h1 {
    font-size: 3.4rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.18;
    margin-bottom: 1.5rem;
    max-width: 820px;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 22px rgba(0, 0, 0, 0.55), 0 1px 3px rgba(0, 0, 0, 0.4);
}

.hero-inner h1 span {
    color: var(--sci-accent);
    text-shadow: 0 2px 22px rgba(0, 0, 0, 0.6), 0 1px 3px rgba(0, 0, 0, 0.45);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.92);
    line-height: 1.8;
    margin-bottom: 2.25rem;
    max-width: 620px;
    font-weight: 300;
    text-shadow: 0 1px 14px rgba(0, 0, 0, 0.55), 0 1px 3px rgba(0, 0, 0, 0.35);
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 36px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 40px;
    transition: var(--transition);
    box-shadow: 0 8px 28px rgba(26, 75, 140, 0.4);
    letter-spacing: 0.3px;
    border: 1px solid rgba(142, 202, 230, 0.45);
}

.hero-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 36px rgba(26, 75, 140, 0.55);
    border-color: rgba(142, 202, 230, 0.75);
}

.hero-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 36px;
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    border-radius: 40px;
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    transition: var(--transition);
    backdrop-filter: blur(8px);
    letter-spacing: 0.3px;
}

.hero-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-3px);
}

.hero-controls {
    position: absolute;
    right: 2rem;
    bottom: 150px;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 14px;
}

.hero-pagination {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-pagination .swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 1;
    transition: var(--transition);
    margin: 0 !important;
}

.hero-pagination .swiper-pagination-bullet-active {
    background: var(--sci-accent);
    width: 28px;
    border-radius: 10px;
}

.hero-nav-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1.5px solid rgba(255, 255, 255, 0.45);
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

.hero-nav-btn:hover {
    background: rgba(255, 255, 255, 0.28);
    border-color: #ffffff;
    transform: scale(1.08);
}

.hero-stats-bar {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 4;
    background: rgba(8, 28, 58, 0.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 1.4rem 2rem;
}

.hero-stats-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.hero-stat {
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0 0.5rem;
}

.hero-stat:last-child {
    border-right: none;
}

.hero-stat span {
    display: block;
    font-size: 1.9rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.hero-stat span em {
    font-style: normal;
    color: var(--sci-accent);
    font-size: 0.75em;
    margin-left: 2px;
}

.hero-stat label {
    display: block;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.78);
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   7. 首页：科研动态 / 技术能力 / 服务对象 / 服务流程
   ========================================================================== */
.research-highlights {
    margin-bottom: 5rem;
}

.research-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
    margin-top: 2.5rem;
}

.research-item {
    background: #ffffff;
    border: 1px solid #e8edf3;
    border-radius: var(--border-radius);
    padding: 1.75rem 1.75rem 1.5rem;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.research-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--sci-accent);
    opacity: 0.6;
    transition: var(--transition);
}

.research-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px rgba(26, 75, 140, 0.1);
    border-color: #d8e2ef;
}

.research-item:hover::before {
    opacity: 1;
    width: 5px;
}

.research-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.research-journal {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.research-date {
    font-size: 0.78rem;
    color: #98a4b0;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.research-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition);
}

.research-item:hover .research-title {
    color: var(--primary-color);
}

.research-meta {
    font-size: 0.85rem;
    color: var(--gray-color);
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 6px;
}

.research-meta i {
    color: var(--sci-accent-deep);
    font-size: 0.75rem;
}

.research-more-link-wrap {
    text-align: center;
    margin-top: 2.5rem;
}

.why-choose-us {
    background: linear-gradient(135deg, rgba(26, 75, 140, 0.08) 0%, rgba(142, 202, 230, 0.10) 100%);
    padding: 4rem 2rem;
    border-radius: var(--border-radius);
    margin-bottom: 5rem;
}

.why-content {
    max-width: 1200px;
    margin: 0 auto;
}

.why-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.why-stat-item {
    text-align: center;
    padding: 2.5rem 2rem;
    background: #ffffff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.why-stat-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow-hover);
}

.why-stat-item h3 {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.why-stat-item h4 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.why-stat-item p {
    color: var(--gray-color);
    line-height: 1.7;
    font-size: 1rem;
}

.clients-showcase {
    margin-bottom: 5rem;
}

.clients-wall {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    max-width: 900px;
    margin: 0 auto;
}

.clients-wall span {
    padding: 0.65rem 1.35rem;
    background: #f8fafc;
    border: 1px solid #e8edf3;
    border-radius: 20px;
    font-size: 0.95rem;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
    letter-spacing: 0.2px;
    cursor: default;
}

.clients-wall span:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(26, 75, 140, 0.1);
}

.process-section {
    margin-bottom: 0;
    background: linear-gradient(135deg, rgba(26, 75, 140, 0.02) 0%, rgba(142, 202, 230, 0.06) 100%);
    padding: 3rem;
    border-radius: var(--border-radius);
}

.process-description {
    color: var(--gray-color);
    margin-bottom: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    font-size: 1.05rem;
    line-height: 1.8;
}

.process-steps {
    display: flex;
    justify-content: space-around;
    position: relative;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 12%;
    right: 12%;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--sci-accent) 100%);
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
    flex: 1;
    min-width: 180px;
    margin-bottom: 2rem;
}

.step-number {
    width: 80px;
    height: 80px;
    background: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 0 8px #ffffff;
}

.step-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.step-desc {
    color: var(--gray-color);
    font-size: 0.95rem;
    margin-bottom: 0.6rem;
}

.step-time {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 12px;
    letter-spacing: 0.3px;
}

.process-more-link {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

/* ==========================================================================
   8. 服务流程页
   ========================================================================== */
.reception-note {
    margin-bottom: 5rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid #e8edf3;
}

.reception-note h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1.2rem;
    position: relative;
    padding-bottom: 1rem;
}

.reception-note h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--sci-accent) 100%);
    border-radius: 2px;
}

.reception-note p {
    color: var(--gray-color);
    font-size: 1rem;
    line-height: 1.9;
    margin-bottom: 1rem;
}

.reception-note p:last-child {
    margin-bottom: 0;
}

.reception-note strong {
    color: var(--primary-color);
    font-weight: 600;
}

.process-flow {
    position: relative;
    padding-left: 0;
}

.process-flow .process-step {
    position: relative;
    display: grid;
    grid-template-columns: 70px 1fr;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid #e8edf3;
    transition: var(--transition);
    text-align: left;
    flex: none;
    min-width: 0;
    margin-bottom: 0;
}

.process-flow .process-step:first-child {
    border-top: 1px solid #e8edf3;
}

.process-flow .step-index {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
    line-height: 1.2;
    opacity: 0.85;
    transition: var(--transition);
    padding-left: 1rem;
    position: relative;
}

.process-flow .step-index::before {
    content: '';
    position: absolute;
    top: 0.2rem;
    left: 0;
    width: 3px;
    height: calc(100% + 0.4rem);
    background: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
}

.process-flow .process-step:hover .step-index::before {
    opacity: 1;
}

.process-flow .process-step:hover .step-index {
    opacity: 1;
    color: var(--primary-dark);
}

.process-flow .step-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.4rem;
    line-height: 1.4;
    transition: var(--transition);
}

.process-flow .process-step:hover .step-body h3 {
    color: var(--primary-color);
}

.process-flow .step-body p {
    color: var(--gray-color);
    font-size: 0.95rem;
    line-height: 1.7;
}

.process-note {
    margin-top: 2rem;
    padding: 1.5rem 1.5rem 1.5rem 1.8rem;
    background: #f8fafc;
    border-left: 3px solid var(--sci-accent);
    border-radius: 6px;
    font-size: 0.95rem;
    color: var(--gray-color);
    line-height: 1.8;
}

.process-note strong {
    color: var(--primary-color);
    font-weight: 600;
    display: block;
    margin-bottom: 0.3rem;
}

/* ==========================================================================
   9. 承诺栏 / 服务总述
   ========================================================================== */
.commitment-section {
    padding-top: 4rem;
    border-top: 1px solid #e8edf3;
}

.commitment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 2rem;
}

.commitment-item {
    position: relative;
    padding-top: 1.5rem;
}

.commitment-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-color) 0%,
        var(--sci-accent) 25%,
        rgba(26, 75, 140, 0.12) 60%,
        transparent 100%);
    border-radius: 2px;
}

.commitment-item h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.8rem;
}

.commitment-item p {
    color: var(--gray-color);
    font-size: 0.95rem;
    line-height: 1.75;
}

.commitment-group {
    position: relative;
    padding-top: 1.5rem;
}

.commitment-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-color) 0%,
        var(--sci-accent) 25%,
        rgba(26, 75, 140, 0.12) 60%,
        transparent 100%);
    border-radius: 2px;
}

.commitment-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.9rem;
}

.commitment-phrases {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1.25rem;
    font-size: 1rem;
    color: var(--gray-color);
    letter-spacing: 0.3px;
    line-height: 1.8;
}

.commitment-phrases span {
    position: relative;
    padding-left: 14px;
}

.commitment-phrases span::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--sci-accent-deep);
    transform: translateY(-50%);
}

.commitment-phrases span:first-child {
    padding-left: 0;
}

.commitment-phrases span:first-child::before {
    display: none;
}

.services-overview {
    max-width: 100%;
    margin: 0 0 5rem 0;
    padding: 0;
    text-align: left;
    border-top: none;
}

.services-overview-inner {
    position: relative;
    padding-top: 1.5rem;
}

.services-overview-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-color) 0%,
        var(--sci-accent) 25%,
        rgba(26, 75, 140, 0.12) 60%,
        transparent 100%);
    border-radius: 2px;
}

.services-overview-text {
    font-size: 1rem;
    color: var(--gray-color);
    line-height: 1.9;
    letter-spacing: 0.2px;
    margin: 0;
}

/* ==========================================================================
   10. 关于我们
   ========================================================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 4rem;
    align-items: start;
    margin-bottom: 5rem;
}

.about-text p {
    font-size: 1rem;
    line-height: 1.85;
    margin-bottom: 1.25rem;
    color: #4a5568;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-photo {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0, 0, 0, 0.05);
    background: #f5f7fa;
    aspect-ratio: 4 / 3;
    position: relative;
}

.about-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.quality-section {
    margin-bottom: 0;
    position: relative;
    padding-top: 1.5rem;
}

.quality-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-color) 0%,
        var(--sci-accent) 25%,
        rgba(26, 75, 140, 0.12) 60%,
        transparent 100%);
    border-radius: 2px;
}

.quality-section .group-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 2rem;
}

.quality-subgroup {
    margin-bottom: 2.5rem;
}

.quality-subgroup:last-of-type {
    margin-bottom: 0;
}

.quality-subgroup-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.5px;
    margin-bottom: 0.9rem;
    padding-left: 12px;
    position: relative;
}

.quality-subgroup-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 16px;
    background: var(--primary-color);
    transform: translateY(-50%);
    border-radius: 2px;
}

.quality-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 2.5rem;
    border-top: 1px solid #e8edf3;
}

.quality-item {
    position: relative;
    padding: 1.1rem 0 1.1rem 1rem;
    border-bottom: 1px solid #e8edf3;
    transition: var(--transition);
}

.quality-item::before {
    content: '';
    position: absolute;
    top: 1.1rem;
    left: 0;
    width: 3px;
    height: calc(100% - 2.2rem);
    background: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
}

.quality-item:hover::before {
    opacity: 1;
}

.quality-item h4 {
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.35rem;
}

.quality-item:hover h4 {
    color: var(--primary-color);
}

.quality-item p {
    font-size: 0.95rem;
    color: var(--gray-color);
    line-height: 1.75;
    margin: 0;
}

/* ==========================================================================
   11. 联系我们
   ========================================================================== */
.contact-main {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.contact-info h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--sci-accent) 100%);
    border-radius: 2px;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-row {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    line-height: 1.7;
}

.contact-row .label {
    flex-shrink: 0;
    width: 80px;
    color: var(--gray-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.contact-row .value {
    color: var(--dark-color);
    font-size: 1rem;
    line-height: 1.75;
}

.contact-row .value a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-row .value a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.contact-phone {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.5px;
}

.contact-phone a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-phone a:hover {
    color: var(--primary-dark);
}

.wechat-value {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.wechat-id-text {
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 0.5px;
}

.copy-wechat-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 12px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary-color);
    background: var(--primary-light);
    border: none;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.copy-wechat-btn:hover {
    background: var(--primary-color);
    color: #ffffff;
}

.copy-wechat-btn.copied {
    background: var(--success-color);
    color: #ffffff;
}

.contact-photo {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0, 0, 0, 0.05);
    background: #f5f7fa;
    aspect-ratio: 4 / 3;
    position: relative;
}

.contact-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ==========================================================================
   12. 仪器列表
   ========================================================================== */
.equipment-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem 2.5rem;
    margin-bottom: 5rem;
}

.equipment-item {
    position: relative;
    padding: 0;
    border: 1px solid #e8edf3;
    border-radius: 10px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0;
    background: #ffffff;
    overflow: hidden;
}

.equipment-item:hover {
    border-color: rgba(26, 75, 140, 0.25);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    transform: translateY(-4px);
}

.equipment-thumb {
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #f5f7fa;
    border-radius: 10px 10px 0 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.equipment-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.equipment-item:hover .equipment-thumb img {
    transform: scale(1.04);
}

.equipment-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.25rem 1.25rem 1.5rem;
}

.equipment-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1.4;
    margin: 0;
    transition: var(--transition);
}

.equipment-item:hover .equipment-name {
    color: var(--primary-color);
}

.equipment-desc {
    font-size: 0.95rem;
    color: #5a6673;
    line-height: 1.75;
    margin: 0;
}

/* ==========================================================================
   13. 案例列表
   ========================================================================== */
.case-list {
    position: relative;
    margin-bottom: 1rem;
}

.case-item {
    position: relative;
    padding: 1.75rem 0 1.75rem 1.25rem;
    border-bottom: 1px solid #e8edf3;
    transition: var(--transition);
}

.case-item:first-child {
    border-top: 1px solid #e8edf3;
}

.case-item::before {
    content: '';
    position: absolute;
    top: 1.75rem;
    left: 0;
    width: 3px;
    height: calc(100% - 3.5rem);
    background: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
}

.case-item:hover::before {
    opacity: 1;
}

.case-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    margin-bottom: 0.9rem;
}

.case-index {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.5px;
    padding-right: 0.9rem;
    border-right: 1px solid #e8edf3;
    margin-right: 0.9rem;
    line-height: 1.4;
}

.case-type {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
    transition: var(--transition);
}

.case-item:hover .case-type {
    color: var(--primary-color);
}

.case-subject {
    font-size: 0.95rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.case-desc {
    font-size: 1rem;
    color: #5a6673;
    line-height: 1.85;
    margin-bottom: 0.9rem;
    max-width: 900px;
}

.case-keywords {
    font-size: 0.9rem;
    color: var(--gray-color);
}

.case-keywords span {
    color: var(--primary-color);
    font-weight: 500;
}

/* ==========================================================================
   14. 科研文库
   ========================================================================== */
.filter-container {
    display: flex;
    justify-content: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.filter-btn {
    background: transparent;
    color: var(--gray-color);
    padding: 8px 18px;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-bottom: 2px solid transparent;
    font-family: inherit;
}

.filter-btn:hover {
    color: var(--primary-color);
}

.filter-btn.active {
    color: var(--primary-color);
    font-weight: 600;
    border-bottom-color: var(--primary-color);
}

.filter-btn.public-papers-entry {
    color: var(--primary-color);
    font-weight: 700;
    border-bottom-color: rgba(142, 202, 230, 0.75);
    margin-left: 0.5rem;
}

.filter-btn.public-papers-entry i {
    color: var(--sci-accent-deep);
}

.filter-btn.public-papers-entry:hover {
    color: var(--primary-dark);
    border-bottom-color: var(--sci-accent);
    background-color: rgba(26, 75, 140, 0.06);
}

.papers-list {
    position: relative;
    margin-bottom: 5rem;
}

.paper-item {
    position: relative;
    padding: 2rem 0 2rem 1.25rem;
    border-bottom: 1px solid #e8edf3;
    transition: var(--transition);
    display: flex;
    gap: 1.75rem;
    align-items: flex-start;
}

.paper-item:first-child {
    border-top: 1px solid #e8edf3;
}

.paper-item::before {
    content: '';
    position: absolute;
    top: 2rem;
    left: 0;
    width: 3px;
    height: calc(100% - 4rem);
    background: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
}

.paper-item:hover::before {
    opacity: 1;
}

.paper-logo {
    flex-shrink: 0;
    width: 200px;
}

.paper-logo img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.paper-content {
    flex: 1;
    min-width: 0;
}

.paper-journal-line {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem 1.25rem;
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.paper-journal-line .journal-name {
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.paper-journal-line .journal-meta {
    color: var(--gray-color);
    font-weight: 500;
}

.paper-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1.45;
    margin-bottom: 0.6rem;
    transition: var(--transition);
}

.paper-item:hover .paper-title {
    color: var(--primary-color);
}

.paper-authors {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: 0.9rem;
}

.paper-abstract {
    font-size: 1rem;
    color: #5a6673;
    line-height: 1.85;
    margin-bottom: 0.9rem;
}

.paper-keywords {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: 0.75rem;
}

.paper-keywords span {
    color: var(--primary-color);
    font-weight: 500;
}

.paper-acknowledgement {
    font-size: 0.85rem;
    color: #8a95a3;
    display: flex;
    align-items: center;
    gap: 6px;
}

.paper-acknowledgement i {
    color: var(--sci-accent-deep);
    font-size: 0.75rem;
}

.repository-info {
    max-width: 900px;
    margin: 0 auto 5rem;
    padding: 3rem 2rem 0;
    text-align: center;
    border-top: 1px solid #eef1f5;
}

.repository-info h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}

.repository-info h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--sci-accent) 100%);
    border-radius: 2px;
}

.repository-info p {
    font-size: 1rem;
    line-height: 1.95;
    color: var(--gray-color);
    margin-top: 1.5rem;
    text-align: justify;
}

.confidential-notice {
    max-width: 900px;
    margin: 3rem auto 0;
    background: rgba(255, 193, 7, 0.06);
    border-left: 4px solid var(--warning-color);
    padding: 1.5rem 1.75rem;
    border-radius: 4px;
    text-align: left;
}

.confidential-notice h4 {
    color: var(--warning-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
}

.confidential-notice p {
    font-size: 0.9rem;
    color: var(--gray-color);
    line-height: 1.75;
    margin: 0;
    text-align: left;
}

/* ==========================================================================
   15. public-papers
   ========================================================================== */
.page-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(26, 75, 140, 0.08);
    color: var(--primary-color);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 1.25rem;
    border: 1px solid rgba(26, 75, 140, 0.15);
}

.page-hero-badge i {
    font-size: 0.75rem;
    color: var(--sci-accent-deep);
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 10px;
    border: 1px solid rgba(26, 75, 140, 0.08);
    padding: 0.5rem 1rem;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 1.5rem;
    position: relative;
}

.hero-stat-item + .hero-stat-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: rgba(26, 75, 140, 0.12);
}

.hero-stat-num {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 0.78rem;
    color: var(--gray-color);
    margin-top: 2px;
}

.hero-methods {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--gray-color);
    line-height: 2;
}

.hero-methods strong {
    color: var(--primary-color);
    font-weight: 600;
    margin-right: 6px;
}

.hero-methods .method-chip {
    display: inline-block;
    background: rgba(26, 75, 140, 0.06);
    color: var(--primary-color);
    padding: 1px 9px;
    border-radius: 10px;
    margin: 2px 3px;
    font-weight: 500;
    font-size: 0.8rem;
}

.back-bar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 2rem 0;
    display: flex;
    justify-content: flex-start;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #ffffff;
    color: var(--primary-color);
    border: 1.5px solid var(--primary-light);
    border-radius: 30px;
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(26, 75, 140, 0.06);
}

.back-btn:hover {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    transform: translateX(-3px);
}

.category-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 3rem 0 0.5rem;
    padding-left: 14px;
    border-left: 4px solid var(--sci-accent);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.category-title i {
    font-size: 1rem;
    color: var(--sci-accent-deep);
    width: 22px;
    text-align: center;
}

.category-title span {
    font-size: 0.85rem;
    color: var(--gray-color);
    font-weight: 500;
    margin-left: auto;
}

.category-title:first-child {
    margin-top: 0;
}

.paper-method-line {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem 1.25rem;
    font-size: 0.95rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.paper-method-line .method-name {
    color: var(--primary-color);
    font-weight: 700;
    background: rgba(26, 75, 140, 0.06);
    padding: 3px 11px;
    border-radius: 6px;
}

.paper-method-line .sample-tag {
    color: var(--gray-color);
    font-weight: 500;
    font-size: 0.85rem;
}

.paper-desc {
    font-size: 0.96rem;
    color: #5a6673;
    line-height: 1.85;
    max-width: 950px;
    margin: 0;
}

.public-disclaimer {
    max-width: 1000px;
    margin: 3rem auto 0;
    background: rgba(26, 75, 140, 0.03);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem 1.75rem;
    border-radius: 4px;
    text-align: left;
}

.public-disclaimer h4 {
    color: var(--primary-color);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
}

.public-disclaimer p {
    font-size: 0.9rem;
    color: var(--gray-color);
    line-height: 1.8;
    margin: 0;
}

.public-disclaimer p + p {
    margin-top: 0.6rem;
}

.update-note {
    max-width: 1000px;
    margin: 1.5rem auto 0;
    text-align: right;
    font-size: 0.82rem;
    color: #8a95a3;
}

.update-note i {
    color: var(--sci-accent-deep);
    margin-right: 4px;
}

.bottom-back {
    text-align: center;
    margin: 3rem auto 0;
    padding-top: 2.5rem;
    border-top: 1px solid #eef1f5;
}

.bottom-back .back-btn {
    padding: 12px 28px;
    font-size: 0.95rem;
}

/* ==========================================================================
   16. 表单页
   ========================================================================== */
.form-container {
    max-width: 900px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: 0 12px 40px rgba(13, 44, 90, 0.06);
    border: 1px solid #eef1f5;
    transition: var(--transition);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.8rem;
    font-weight: 600;
    color: var(--dark-color);
    font-size: 1.05rem;
}

.form-label i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.required::after {
    content: '*';
    color: var(--danger-color);
    margin-left: 4px;
    font-size: 0.95rem;
}

.form-input,
.form-textarea,
.form-select {
    padding: 1rem 1.2rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background-color: #ffffff;
    color: var(--dark-color);
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 75, 140, 0.08);
    background-color: #fbfcfe;
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.captcha-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    align-items: end;
    margin-bottom: 2rem;
}

.captcha-input {
    grid-column: 1;
}

.captcha-display {
    display: flex;
    align-items: stretch;
    gap: 0.75rem;
    grid-column: 2;
    justify-content: center;
}

.captcha-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 56px;
    background-color: #f5f7fa;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 0 1.5rem;
    font-size: 1.8rem;
    font-weight: bold;
    letter-spacing: 6px;
    color: var(--dark-color);
    user-select: none;
    min-width: 140px;
    cursor: pointer;
}

.refresh-captcha {
    background: #f5f7fa;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    color: var(--primary-color);
    font-size: 1rem;
    cursor: pointer;
    padding: 0 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.refresh-captcha:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.form-submit {
    display: flex;
    justify-content: center;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid #eef1f5;
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 1.2rem 3.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 6px 20px rgba(26, 75, 140, 0.28);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: inherit;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 26px rgba(26, 75, 140, 0.38);
}

/* ==========================================================================
   17. cue-analysis
   ========================================================================== */
.principle-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.step-card {
    background: #ffffff;
    border-radius: var(--border-radius);
    padding: 1.8rem 1.5rem;
    box-shadow: var(--box-shadow);
    border: 1px solid #eef2f6;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-hover);
}

.step-card .step-num {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(26, 75, 140, 0.06);
    line-height: 1;
}

.step-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.step-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.6rem;
}

.step-card p {
    font-size: 0.9rem;
    color: var(--gray-color);
    line-height: 1.7;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.advantage-item {
    background: linear-gradient(135deg, rgba(26, 75, 140, 0.03) 0%, rgba(142, 202, 230, 0.06) 100%);
    border-radius: var(--border-radius);
    padding: 1.8rem 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.advantage-item i {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.advantage-item h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.advantage-item p {
    font-size: 0.9rem;
    color: var(--gray-color);
    line-height: 1.7;
}

.cost-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    margin: 1.5rem 0;
}

.cost-item {
    background: #ffffff;
    border: 1px solid #eef2f6;
    border-radius: var(--border-radius);
    padding: 1.5rem 1.2rem;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.cost-item i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.cost-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.3rem;
}

.cost-item p {
    font-size: 0.8rem;
    color: var(--gray-color);
}

.intro-text .formula-highlight {
    display: inline-block;
    background: var(--primary-color);
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    margin: 0.5rem 0 1rem;
    font-family: 'Courier New', monospace;
}

.page-header .tag-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-light) 0%, #eef6ff 100%);
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 30px;
    margin-top: 1rem;
    border: 1px solid rgba(26, 75, 140, 0.1);
}

/* ==========================================================================
   18. 平台备注
   ========================================================================== */
.platform-note {
    background: rgba(26, 75, 140, 0.05);
    border-left: 4px solid var(--primary-color);
    padding: 1rem 1.5rem;
    border-radius: 0 8px 8px 0;
    margin-top: 1rem;
    font-size: 0.95rem;
    color: var(--gray-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.platform-note i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* ==========================================================================
   19. 响应式 — 平板
   ========================================================================== */
@media (max-width: 1100px) {
    .services-grid { gap: 0 2rem; }
    .service-title { font-size: 1.2rem; }
    .service-desc { font-size: 0.98rem; }
    .equipment-list { grid-template-columns: repeat(2, 1fr); gap: 1.75rem 2rem; }
    .about-content { gap: 3rem; }
    .research-list { grid-template-columns: repeat(2, 1fr); }
    .hero-inner h1 { font-size: 2.9rem; }
    .contact-main { gap: 3rem; }
}

/* ==========================================================================
   20. 响应式 — 移动端（核心）
   ========================================================================== */
@media (max-width: 900px) {
    html, body { overflow-x: hidden; max-width: 100%; }
    .container, .main-content { overflow-x: hidden; max-width: 100%; }
    .main-content { padding: 3rem 1rem 4rem; }

    .intro-section { grid-template-columns: 1fr; gap: 2rem; padding: 2rem; }
    .page-header h1 { font-size: 2.2rem; }
    .page-header h1 .number { font-size: 2.8rem; }
    .page-hero h1 { font-size: 2.5rem; }
    .category-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .principle-steps { grid-template-columns: repeat(2, 1fr); }
    .advantage-grid { grid-template-columns: 1fr; }
    .cost-list { grid-template-columns: repeat(2, 1fr); }

    .services-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.85rem;
        margin-bottom: 2.5rem;
        padding: 0 0.25rem;
    }
    .services-grid::before { display: none; }

    .services-grid .service-card {
        padding: 0;
        border: none;
        border-radius: 0;
        background: transparent;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        min-width: 0;
        width: 100%;
        min-height: 0;
    }
    .services-grid .service-card::before { display: none; }
    .services-grid .service-card:hover::before { display: none; }

    .services-grid .service-visual {
        width: 100%;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
        background: #f5f7fa;
        border: none;
    }
    .services-grid .service-visual img {
        width: 100%;
        max-width: 100%;
        aspect-ratio: 4 / 3;
        height: auto;
        object-fit: cover;
        display: block;
    }
    .services-grid .service-body {
        min-width: 0;
        width: 100%;
        padding: 0 0.2rem;
        gap: 0.3rem;
    }
    .services-grid .service-title {
        font-size: 0.92rem;
        font-weight: 700;
        line-height: 1.4;
        margin: 0;
        color: var(--dark-color);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        word-break: break-word;
    }
    .services-grid .service-desc {
        font-size: 0.78rem;
        line-height: 1.55;
        color: #6b7684;
        margin: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        word-break: break-word;
        overflow-wrap: anywhere;
    }

    .services-more-link-wrap { display: none; }

    .research-highlights,
    .why-choose-us,
    .clients-showcase,
    .process-section {
        display: none;
    }

    .hero-section { height: 68vh; min-height: 500px; }
    .hero-content { padding: 1.5rem 1.25rem 170px; align-items: flex-end; }
    .hero-inner h1 { font-size: 1.9rem; line-height: 1.22; margin-bottom: 1rem; word-break: break-word; }
    .hero-subtitle { font-size: 0.92rem; line-height: 1.7; margin-bottom: 1.5rem; }
    .hero-cta-group { flex-direction: column; width: 100%; gap: 0.75rem; }
    .hero-cta-primary, .hero-cta-secondary {
        justify-content: center; padding: 13px 28px;
        font-size: 0.95rem; width: 100%;
    }
    .hero-controls { right: 1.25rem; bottom: 175px; gap: 10px; }
    .hero-nav-btn { width: 38px; height: 38px; font-size: 0.8rem; }
    .hero-pagination { display: none; }
    .hero-stats-bar { padding: 1rem 1.25rem; }
    .hero-stats-inner { grid-template-columns: repeat(2, 1fr); gap: 0.75rem 0.5rem; }
    .hero-stat { border-right: none; }
    .hero-stat span { font-size: 1.35rem; }
    .hero-stat label { font-size: 0.72rem; }

    .about-content { grid-template-columns: 1fr; gap: 2.5rem; }
    .about-photo { aspect-ratio: 16 / 10; }
    .quality-list { grid-template-columns: 1fr; }
    .contact-main { grid-template-columns: 1fr; gap: 2.5rem; }
    .contact-photo { aspect-ratio: 16 / 10; }

    .paper-item { padding: 1.75rem 0 1.75rem 1rem; gap: 1.25rem; }
    .paper-logo { width: 150px; }
    .filter-container { gap: 0.5rem; margin-bottom: 3rem; }
    .filter-btn { padding: 6px 14px; font-size: 0.95rem; }

    .case-item { padding: 1.5rem 0 1.5rem 1rem; }

    .form-grid { grid-template-columns: 1fr; }
    .captcha-section { grid-template-columns: 1fr; gap: 1rem; }
    .captcha-display { grid-column: 1; justify-content: flex-start; }
    .form-container { padding: 2rem; }

    .process-flow .process-step { grid-template-columns: 50px 1fr; gap: 1rem; padding: 1.25rem 0; }
    .process-flow .step-index { font-size: 1.4rem; padding-left: 0.8rem; }
    .process-flow .step-body h3 { font-size: 1.05rem; }
    .process-flow .step-body p { font-size: 0.9rem; }
    .reception-note h2 { font-size: 1.3rem; }
    .commitment-grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ==========================================================================
   21. 响应式 — 小屏
   ========================================================================== */
@media (max-width: 768px) {
    .main-content { padding: 3rem 1rem 4rem; }
    .page-hero { padding: 4rem 1rem; }
    .page-hero h1 { font-size: 2.2rem; }
    .equipment-list { grid-template-columns: 1fr; gap: 1.5rem; }
    .repository-info { padding: 2.5rem 1.5rem 0; }
    .repository-info h2 { font-size: 1.6rem; }
    .paper-journal-line { gap: 0.3rem 1rem; font-size: 0.85rem; }
    .paper-title { font-size: 1.15rem; }
    .paper-abstract { font-size: 0.95rem; line-height: 1.8; }
    .paper-logo { width: 130px; }
    .case-type { font-size: 1.25rem; }
    .case-desc { font-size: 0.95rem; line-height: 1.8; }
    .contact-row { flex-direction: column; gap: 0.3rem; }
    .contact-row .label { width: auto; }
    .why-stats { grid-template-columns: 1fr; }
    .process-steps { flex-direction: column; gap: 2rem; }
    .process-steps::before { display: none; }
    .process-step { min-width: 100%; }
    .form-container { padding: 1.5rem; }
}

@media (max-width: 480px) {
    .page-header h1 { font-size: 1.8rem; flex-direction: column; align-items: flex-start; gap: 5px; }
    .page-header h1 .number { font-size: 2.2rem; }
    .page-hero h1 { font-size: 2.2rem; }
    .section-header h2 { font-size: 1.9rem; }
    .principle-steps { grid-template-columns: 1fr; }
    .cost-list { grid-template-columns: 1fr; }
    .clients-wall span { font-size: 0.85rem; padding: 0.5rem 1rem; }
    .filter-container { flex-direction: column; align-items: stretch; }
    .filter-btn { justify-content: center; width: 100%; }
    .filter-btn.public-papers-entry { margin-left: 0; }
    .paper-item { flex-direction: column; gap: 0.9rem; padding: 1.5rem 0 1.5rem 0.9rem; }
    .paper-logo { width: 140px; }
    .paper-title { font-size: 1.05rem; }
    .paper-abstract { font-size: 0.92rem; }
    .case-item { padding: 1.25rem 0 1.25rem 0.9rem; }
    .case-type { font-size: 1.15rem; }
    .case-desc { font-size: 0.92rem; }
    .contact-info h2 { font-size: 1.6rem; }
    .contact-phone { font-size: 1.3rem; }
    .hero-section { min-height: 500px; }
    .hero-inner h1 { font-size: 1.7rem; }
    .hero-content { padding: 1.5rem 1rem 175px; }
    .submit-btn { width: 100%; padding: 1.15rem 1rem; font-size: 1.05rem; }
    .captcha-image { width: 120px; font-size: 1.3rem; letter-spacing: 1px; }
    .commitment-title { font-size: 1.2rem; }
    .commitment-phrases { font-size: 0.9rem; gap: 0.35rem 0.9rem; }
}

/* ==========================================================================
   22. 页脚移动端精简（补丁）
   ========================================================================== */
@media (max-width: 900px) {
    .footer {
        padding: 0 1rem calc(1.5rem + var(--mobile-bar-height));
    }
    .footer-content {
        display: none !important;
    }
    .footer-bottom {
        padding-top: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        text-align: center;
    }
    .footer-bottom p {
        font-size: 0.78rem;
        line-height: 1.7;
        margin-bottom: 0.4rem;
        color: rgba(255, 255, 255, 0.7);
    }
    .footer-bottom p:last-child {
        margin-bottom: 0;
        font-size: 0.72rem;
        color: rgba(255, 255, 255, 0.5);
    }
}